Aerosol antiperspirant compositions delivering astringent salt with low mistiness and dustiness

Claim 2

An aerosol antiperspirant composition that is capable of being dispensed from aerosol containers with low mistiness and dustiness, comprising, in combination, an antiperspirant salt in an amount within the range from about 3 to about 30%; a liquid phase comprising a liquefied propellant in an amount within the range from about 15% to about 95%; a bulking agent in an amount within the range from about 0.1 to about 5%; and a synthetic polymer gum having a viscosity within the range from about 500,000 to about 100 million centistokes at 25° C., the synthetic polymer gum being in solution in the liquid phase in an amount within the range from about 0.05 to about 5% by weight of the composition to inhibit mistiness and dustiness.

Claim 3

An antiperspirant composition according to claim 1, in which the synthetic polymer gum is a silicone gum.

Claim 4

An antiperspirant composition according to claim 1, in which the synthetic polymer gum is an acrylic polymer.

Claim 5

An antiperspirant composition according to claim 1, in which the synthetic polymer gum is a hydrocarbon polymer.

Claim 6

An antiperspirant composition according to claim 1, comprising in addition a nonvolatile miscible organic liquid in an amount within the range from about 0.1 to about 30% by weight of the composition.

Claim 7

An antiperspirant composition according to claim 5, in which the organic liquid comprises in part an aliphatic, cycloaliphatic or aromatic carboxylic acid having from about nine to fifty carbon atoms, that enhances adhesion of the antiperspirant salt to the skin.

Claim 8

An antiperspirant composition according to claim 6, in which the carboxylic acid is an aliphatic acid.

Claim 9

An antiperspirant composition according to claim 6, in which the carboxylic acid is an aromatic acid.

Claim 10

An antiperspirant composition according to claim 6, in which the carboxylic acid is a cycloaliphatic acid.

Claim 11

An antiperspirant composition according to claim 5, in which the nonvolatile liquid is a carboxylic acid ester of an alcohol, the ester having from about twelve to about twenty-six carbon atoms.

Claim 12

An antiperspirant composition according to claim 10, in which the ester is isopropyl myristate.

Claim 13

An antiperspirant composition according to claim 1, in which the bulking agent comprises colloidal silica having a particle size below 10 microns in diameter.

Claim 14

An antiperspirant composition according to claim 1, in which the bulking agent comprises a hydrophobic clay having a particle size below 10 microns in diameter.

Claim 15

An antiperspirant composition according to claim 1, in which the antiperspirant salt is an aluminum salt.

Claim 16

An antiperspirant composition according to claim 14, in which the antiperspirant salt is aluminum chlorhydroxide.

Claim 17

An antiperspirant composition according to claim 14, in which the antiperspirant salt is aluminum chloride.

Claim 18

An antiperspirant composition according to claim 1, in which the antiperspirant salt is a zorconium salt.

Claim 19

An antiperspirant composition according to claim 1, in which the antiperspirant salt is a mixture of aluminum chlorhydroxide and zirconium chlorhydroxide.

Claim 20

An antiperspirant composition according to claim 1, in which the propellant is a hydrocarbon propellant.

Claim 21

An antiperspirant composition according to claim 1, in which the propellant is a halocarbon propellant.

Claim 22

An antiperspirant composition according to claim 1, in which the propellant is isobutane.

Claim 23

An antiperspirant composition according to claim 1, comprising a mixture of isobutane and another hydrocarbon or halocarbon propellant.

Claim 24

An aerosol antiperspirant composition that is highly concentrated with respect to the active antiperspirant, and capable of being dispensed from aerosol containers of the foam type at a low delivery rate in a propellant gas:liquid ratio within the range from about 10:1 to about 40:1 comprising, in combination, a liquid phase comprising a nonvolatile miscible organic liquid in an amount within the range from about 0.1 to about 30% by weight of the composition; a bulking agent in an amount within the range from about 0.1 to about 5%, and an antiperspirant salt in an amount within the range from about 8 to about 30%; a liquefied propellant having a vapor pressure of at least 2.4 atmospheres absolute at 21° C.; the liquefied propellant being in an amount of at least 0.15 mole per atmosphere absolute pressure at 21° C. per 100 g of composition to generate an expelled gas:liquid ratio within the range from about 10:1 to about 40:1; a carboxylic acid selected from the group consisting of aliphatic, cycloaliphatic and aromatic carboxylic acids having from about nine to about fifty carbon atoms comprising an amount within the range from about 0.1 to about 30% by weight of the composition and constituting part to all of the nonvolatile liquid, to improve adherence of the antiperspirant salt to the skin; and a synthetic polymer gum having a viscosity within the range from about 500,000 to about 100 million centistokes at 25° C., the synthetic polymer gum being in solution in the liquid phase in an amount within the range from about 0.1 to about 5% by weight of the composition to inhibit formation of stable aerosol dispersions in air of the liquid and solid phases when the composition is expelled from an aerosol container.

Claim 25

An aerosol antiperspirant composition that is highly concentrated with respect to the active antiperspirant, and capable of being dispensed from aerosol containers of the foam type at a low delivery rate in a propellant gas:liquid ratio within the range from about 10:1 to about 40:1 comprising, in combination, a liquid phase comprising a nonvolatile miscible organic liquid in an amount within the range from about 0.1 to about 30% by weight of the composition; a bulking agent in an amount within the range from about 0.1 to about 5%, and an antiperspirant salt in an amount within the range from about 8 to about 30%; a liquefied propellant having a vapor pressure of at least 2.4 atmospheres absolute at 21° C.; the liquefied propellant being in an amount of at least 0.15 mole per atmosphere absolute pressure at 21° C. per 100 g of composition to generate an expelled gas:liquid ratio within the range from about 10:1 to about 40:1; a carboxylic acid selected from the group consisting of aliphatic, cycloaliphatic and aromatic carboxylic acids having from about nine to about fifty carbon atoms comprising an amount within the range from about 0.1 to about 30% by weight of the composition and constituting part to all of the nonvolatile liquid, to improve adherence of the antiperspirant salt to the skin; and a synthetic polymer gum having a viscosity within the range from about 500,000 to about 100 million centistokes at 25° C., the synthetic polymer gum being in solution in the liquid phase in an amount within the range from about 0.1 to about 5% by weight of the composition to inhibit formation of stable aerosol dispersions in air of the liquid and solid phases when the composition is expelled from an aerosol container.

Claim 26

An antiperspirant composition according to claim 23, in which the synthetic polymer gum is a silicone gum.

Claim 27

An antiperspirant composition according to claim 23, in which the synthetic polymer gum is an acrylic polymer.

Claim 28

An antiperspirant composition according to claim 23, in which the synthetic polymer gum is a hydrocarbon polymer.